Impact of Eye Movements on Reach Performance
Aim 2 of Reaching with Central Field Loss
Completed
Display Reader
The goal of the Display Reader project is to develop a computer vision system that runs on smartphones and tablets to enable blind and visually impaired persons to read appliance displays. Such displays are found on an increasing array of appliances such as microwave ovens, thermostats and home medical devices. Click here for Display Reader software download.
BLaDE
BLaDE (Barcode Localization and Decoding Engine) is an Android smartphone app designed to enable a blind or visually impaired user find and read product barcodes. The primary innovation of BLaDE, relative to most commercially available smartphone apps for reading barcodes, is that it provides real-time audio feedback to help visually impaired users find a barcode, which is a prerequisite to being able to read it. Link to BLaDE software download: http://legacy.ski.org/Rehab/Coughlan_lab/BLaDE/ Click here for YouTube video demo of BLaDE in action.
Crosswatch
Crosswatch is a smartphone-based system developed for providing real-time guidance to blind and visually impaired travelers at traffic intersections. Using the smartphone’s built-in camera and other sensors, Crosswatch is designed to tell blind and visually impaired travelers what kind of traffic intersection they are near, how to align themselves properly to the crosswalk, and when the walk light or other traffic light indicates it is time to cross. Click here for link to zip file containing Crosswatch code (open source) and documentation.
Go and Nogo Decision Making
The decision to make or withhold a saccade has been studied extensively using a go-nogo paradigm, but little is known about the decision process underlying pursuit of moving objects. Prevailing models describe pursuit as a feedback system that responds reactively to a moving stimulus. However, situations often arise in which it is disadvantageous to pursue, and humans can decide not to pursue an object just because it moves. This project explores mechanisms underlying the decision to pursue or maintain fixation. Our paradigm, ocular baseball, involves a target that moves from the periphery…
Integration and Segregation
Traditionally, smooth pursuit research has explored how eye movements are generated to follow small, isolated targets that fit within the fovea. Objects in a natural scene, however, are often larger and extend to peripheral retina. They also have components that move in different directions or at different speeds (e.g., wings, legs). To generate a single velocity command for smooth pursuit, motion information from the components must be integrated. Simultaneously, it may be necessary to attend to features of the object while pursuing it.
Video-Based Speech Enhancement for Persons with Hearing and Vision Loss
It is estimated that by 2030, the number of people in the United States over the age of 65 will